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<h4 class="subsection" id="GIMPLE_005fCALL-1"><span>12.8.4 <code class="code">GIMPLE_CALL</code><a class="copiable-link" href="#GIMPLE_005fCALL-1"> &para;</a></span></h4>
<a class="index-entry-id" id="index-GIMPLE_005fCALL"></a>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-_002agimple_005fbuild_005fcall"><span class="category-def">GIMPLE function: </span><span><code class="def-type">gcall</code> <strong class="def-name">*gimple_build_call</strong> <code class="def-code-arguments">(tree fn, unsigned nargs, ...)</code><a class="copiable-link" href="#index-_002agimple_005fbuild_005fcall"> &para;</a></span></dt>
<dd><p>Build a <code class="code">GIMPLE_CALL</code> statement to function <code class="code">FN</code>.  The argument <code class="code">FN</code>
must be either a <code class="code">FUNCTION_DECL</code> or a gimple call address as
determined by <code class="code">is_gimple_call_addr</code>.  <code class="code">NARGS</code> are the number of
arguments.  The rest of the arguments follow the argument <code class="code">NARGS</code>,
and must be trees that are valid as rvalues in gimple (i.e., each
operand is validated with <code class="code">is_gimple_operand</code>).
</p></dd></dl>


<dl class="first-deftypefn">
<dt class="deftypefn" id="index-_002agimple_005fbuild_005fcall_005ffrom_005ftree"><span class="category-def">GIMPLE function: </span><span><code class="def-type">gcall</code> <strong class="def-name">*gimple_build_call_from_tree</strong> <code class="def-code-arguments">(tree call_expr, tree fnptrtype)</code><a class="copiable-link" href="#index-_002agimple_005fbuild_005fcall_005ffrom_005ftree"> &para;</a></span></dt>
<dd><p>Build a <code class="code">GIMPLE_CALL</code> from a <code class="code">CALL_EXPR</code> node.  The arguments
and the function are taken from the expression directly.  The type of the
<code class="code">GIMPLE_CALL</code> is set from the second parameter passed by a caller.
This routine assumes that <code class="code">call_expr</code> is already in GIMPLE form.
That is, its operands are GIMPLE values and the function call needs no further
simplification.  All the call flags in <code class="code">call_expr</code> are copied over
to the new <code class="code">GIMPLE_CALL</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-_002agimple_005fbuild_005fcall_005fvec"><span class="category-def">GIMPLE function: </span><span><code class="def-type">gcall</code> <strong class="def-name">*gimple_build_call_vec</strong> <code class="def-code-arguments">(tree fn, <code class="code">vec&lt;tree&gt;</code> args)</code><a class="copiable-link" href="#index-_002agimple_005fbuild_005fcall_005fvec"> &para;</a></span></dt>
<dd><p>Identical to <code class="code">gimple_build_call</code> but the arguments are stored in a
<code class="code">vec&lt;tree&gt;</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005flhs"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_lhs</strong> <code class="def-code-arguments">(gimple g)</code><a class="copiable-link" href="#index-gimple_005fcall_005flhs"> &para;</a></span></dt>
<dd><p>Return the <code class="code">LHS</code> of call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005flhs_005fptr"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree *</code> <strong class="def-name">gimple_call_lhs_ptr</strong> <code class="def-code-arguments">(gimple g)</code><a class="copiable-link" href="#index-gimple_005fcall_005flhs_005fptr"> &para;</a></span></dt>
<dd><p>Return a pointer to the <code class="code">LHS</code> of call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fset_005flhs"><span class="category-def">GIMPLE function: </span><span><code class="def-type">void</code> <strong class="def-name">gimple_call_set_lhs</strong> <code class="def-code-arguments">(gimple g, tree lhs)</code><a class="copiable-link" href="#index-gimple_005fcall_005fset_005flhs"> &para;</a></span></dt>
<dd><p>Set <code class="code">LHS</code> to be the <code class="code">LHS</code> operand of call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005ffn"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_fn</strong> <code class="def-code-arguments">(gimple g)</code><a class="copiable-link" href="#index-gimple_005fcall_005ffn"> &para;</a></span></dt>
<dd><p>Return the tree node representing the function called by call
statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fset_005ffn"><span class="category-def">GIMPLE function: </span><span><code class="def-type">void</code> <strong class="def-name">gimple_call_set_fn</strong> <code class="def-code-arguments">(gcall *g, tree fn)</code><a class="copiable-link" href="#index-gimple_005fcall_005fset_005ffn"> &para;</a></span></dt>
<dd><p>Set <code class="code">FN</code> to be the function called by call statement <code class="code">G</code>.  This has
to be a gimple value specifying the address of the called
function.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005ffndecl"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_fndecl</strong> <code class="def-code-arguments">(gimple g)</code><a class="copiable-link" href="#index-gimple_005fcall_005ffndecl"> &para;</a></span></dt>
<dd><p>If a given <code class="code">GIMPLE_CALL</code>&rsquo;s callee is a <code class="code">FUNCTION_DECL</code>, return it.
Otherwise return <code class="code">NULL</code>.  This function is analogous to
<code class="code">get_callee_fndecl</code> in <code class="code">GENERIC</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fset_005ffndecl"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_set_fndecl</strong> <code class="def-code-arguments">(gimple g, tree fndecl)</code><a class="copiable-link" href="#index-gimple_005fcall_005fset_005ffndecl"> &para;</a></span></dt>
<dd><p>Set the called function to <code class="code">FNDECL</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005freturn_005ftype"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_return_type</strong> <code class="def-code-arguments">(const gcall *g)</code><a class="copiable-link" href="#index-gimple_005fcall_005freturn_005ftype"> &para;</a></span></dt>
<dd><p>Return the type returned by call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fchain"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_chain</strong> <code class="def-code-arguments">(gimple g)</code><a class="copiable-link" href="#index-gimple_005fcall_005fchain"> &para;</a></span></dt>
<dd><p>Return the static chain for call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fset_005fchain"><span class="category-def">GIMPLE function: </span><span><code class="def-type">void</code> <strong class="def-name">gimple_call_set_chain</strong> <code class="def-code-arguments">(gcall *g, tree chain)</code><a class="copiable-link" href="#index-gimple_005fcall_005fset_005fchain"> &para;</a></span></dt>
<dd><p>Set <code class="code">CHAIN</code> to be the static chain for call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fnum_005fargs"><span class="category-def">GIMPLE function: </span><span><code class="def-type">unsigned</code> <strong class="def-name">gimple_call_num_args</strong> <code class="def-code-arguments">(gimple g)</code><a class="copiable-link" href="#index-gimple_005fcall_005fnum_005fargs"> &para;</a></span></dt>
<dd><p>Return the number of arguments used by call statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005farg"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree</code> <strong class="def-name">gimple_call_arg</strong> <code class="def-code-arguments">(gimple g, unsigned index)</code><a class="copiable-link" href="#index-gimple_005fcall_005farg"> &para;</a></span></dt>
<dd><p>Return the argument at position <code class="code">INDEX</code> for call statement <code class="code">G</code>.  The
first argument is 0.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005farg_005fptr"><span class="category-def">GIMPLE function: </span><span><code class="def-type">tree *</code> <strong class="def-name">gimple_call_arg_ptr</strong> <code class="def-code-arguments">(gimple g, unsigned index)</code><a class="copiable-link" href="#index-gimple_005fcall_005farg_005fptr"> &para;</a></span></dt>
<dd><p>Return a pointer to the argument at position <code class="code">INDEX</code> for call
statement <code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fset_005farg"><span class="category-def">GIMPLE function: </span><span><code class="def-type">void</code> <strong class="def-name">gimple_call_set_arg</strong> <code class="def-code-arguments">(gimple g, unsigned index, tree arg)</code><a class="copiable-link" href="#index-gimple_005fcall_005fset_005farg"> &para;</a></span></dt>
<dd><p>Set <code class="code">ARG</code> to be the argument at position <code class="code">INDEX</code> for call statement
<code class="code">G</code>.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fset_005ftail"><span class="category-def">GIMPLE function: </span><span><code class="def-type">void</code> <strong class="def-name">gimple_call_set_tail</strong> <code class="def-code-arguments">(gcall *s)</code><a class="copiable-link" href="#index-gimple_005fcall_005fset_005ftail"> &para;</a></span></dt>
<dd><p>Mark call statement <code class="code">S</code> as being a tail call (i.e., a call just
before the exit of a function). These calls are candidate for
tail call optimization.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005ftail_005fp"><span class="category-def">GIMPLE function: </span><span><code class="def-type">bool</code> <strong class="def-name">gimple_call_tail_p</strong> <code class="def-code-arguments">(gcall *s)</code><a class="copiable-link" href="#index-gimple_005fcall_005ftail_005fp"> &para;</a></span></dt>
<dd><p>Return true if <code class="code">GIMPLE_CALL</code> <code class="code">S</code> is marked as a tail call.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fnoreturn_005fp"><span class="category-def">GIMPLE function: </span><span><code class="def-type">bool</code> <strong class="def-name">gimple_call_noreturn_p</strong> <code class="def-code-arguments">(gimple s)</code><a class="copiable-link" href="#index-gimple_005fcall_005fnoreturn_005fp"> &para;</a></span></dt>
<dd><p>Return true if <code class="code">S</code> is a noreturn call.
</p></dd></dl>

<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gimple_005fcall_005fcopy_005fskip_005fargs"><span class="category-def">GIMPLE function: </span><span><code class="def-type">gimple</code> <strong class="def-name">gimple_call_copy_skip_args</strong> <code class="def-code-arguments">(gcall *stmt, bitmap args_to_skip)</code><a class="copiable-link" href="#index-gimple_005fcall_005fcopy_005fskip_005fargs"> &para;</a></span></dt>
<dd><p>Build a <code class="code">GIMPLE_CALL</code> identical to <code class="code">STMT</code> but skipping the arguments
in the positions marked by the set <code class="code">ARGS_TO_SKIP</code>.
</p></dd></dl>


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